Help with Regression

I'm doing a regression project inn Excel for my statistics class. One of the questions I'm supposed to solve for doesn't make any sense to me. I was hoping that someone could help clarify what exactly I'm supposed to do in this situation.

"Run a regression of the variable on a polynomial function on time and analyze the relationship. Fit the best model and decide on the degree of the polynomial."

I know how to run a regression of my variable on time but I don't understand where the polynomial function is supposed to come from or how I'm supposed to implement it into the regression. I don't think the polynomial function is my estimate y function from computing the regression of just my variable on time because I tried adding that to my regression in Excel and its t value was 0 so it's useless.

What sort of data have you? Are your data evenly spaced? (Every month or week?)

closing friday stock value of Google for 148 weeks.

Originally Posted by TKHunny

Do you know how to chart the regression function?
What is your experience level with Excel?

I'm not entirely sure what you mean by chart the regression function but I'm able to get a linear function that runs through my data. I would say that my experience level with Excel is novice given the capabilities of the program.